import axios from 'axios';
import store from '@/store';
import { getToken, getUser } from '@/utils/Token';
import { MessageBox, Message } from 'element-ui';

// create an axios instance
const service = axios.create({
  baseURL: process.env.VUE_APP_BASE_API, // url = base url + request url
  withCredentials: true, // send cookies when cross-domain requests
  timeout: 50000 // request timeout
})

// request interceptor
service.interceptors.request.use(
  config => {
    // do something before request is sent
    if (store.getters.token) {
      // let each request carry token
      // ['X-Token'] is a custom headers key
      // please modify it according to the actual situation
      config.headers['Authorization'] = getToken();
      config.headers['username'] = JSON.parse(getUser()).username;
    }
    config.headers['Content-Type'] = 'application/json';
    return config;
  },
  error => {
    // do something with request error
    return Promise.reject(error);
  }
)

// response interceptor
service.interceptors.response.use(
  /**
   * If you want to get http information such as headers or status
   * Please return  response => response
   */

  /**
   * Determine the request status by custom code
   * Here is just an example
   * You can also judge the status by HTTP Status Code
   */
  response => {
    const res = response.data;
    // if the custom code is not 20000, it is judged as an error.
    if (res.code == 200 || res.code == 204 || res.code == 206) {
      return res;
    } else {
      if (res.code == 401 || res.code == 402 || res.code == 403) {
        MessageBox.confirm(res.msg ? res.msg : '身份信息已过期!', '提示', {
          confirmButtonText: '重新登录',
          cancelButtonText: '取消',
          type: 'warning'
        }).then(() => {
          store.dispatch('user/resetToken')
          .then(() => {
            location.replace(location.origin + '/#/');
            MessageBox.close();
          })
        }).catch(() => {
          MessageBox.close();        
        });
      } else {
        Message({
          message: res.msg || 'Error',
          type: 'error',
          duration: 3 * 1000
        })
        return Promise.reject(new Error(res.msg || 'Error'));
      }
    }
  },
  error => {
    Message({
      message: error,
      type: 'error',
      duration: 3 * 1000
    })
    return Promise.reject(error);
  }
)

export default service;
